<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>字体样式</title>
		<style type="text/css">
			div{
				font-family: "宋体";
			}
		</style>
	</head>
	<body>
		原始样式
		<div id="">
			改变后
		</div>
	</body>
</html>
